Haiyang Yu

TL;DR: In this article, the evolution of geometrically necessary dislocation and statistically stored dislocation densities, as well as their roles in strain hardening during mechanical twinning, was experimentally investigated in a tensile-deformed Fe-22Mn-0.6C twinning-induced plasticity (TWIP) steel.

TL;DR: In this article, a cohesive strength based uniform hydrogen degradation law is proposed upon normalization of hydrogen degradation loci with different specimen geometries, where the effects of hydrogen content and geometric constraints are decoupled during normalization.

TL;DR: In this article, the authors present three dimensional discrete dislocation plasticity simulations incorporating the hydrogen elastic stress and a hydrogen dependent dislocation mobility law, and conclude that hydrogen enhanced localized plasticity (HELP) mechanism is viable explanation for HELP.

TL;DR: In this paper, the convergence problem during the cohesive zone modeling of hydrogen embrittlement in constant displacement scenario is attributed to the numerical instability which is studied analytically in the present work.

TL;DR: In this article, the average triaxiality based fracture locus was used to construct fracture loci in a 3D space. But, the results showed that the fracture location with a non-proportional loading path deviates from that with a proportional loading path along the axis of stress triaxia and becomes non-monotonic in high triaxially regime.